Classification Of Elements And Periodicity In Properties Ques 46

46. For the second period elements the correct increasing order of first ionisation enthalpy is :

[2019]

(a) $Li<Be<B<C<N<O<F<Ne$

(b) $Li<$ B $<Be<C<O<N<$ F $<Ne$

(c) $Li<$ B $<Be<$ C $<N<$ O $<$ F $<Ne$

(d) $Li<Be<$ B $<$ C $<$ O $<$ N $<$ F $<Ne$

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Answer:

Correct Answer: 46.(b)

Solution:

(b) Consider the stability of electronic configuration after loss of one electron.